ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,353, issued on April 21, was assigned to PALOMA Co. LTD (Nagoya, Japan).
"Combustion device and water heater" was invented by Yusuke Kakizaki (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A combustion device includes a solenoid valve configured to open and close an inflow port and an additional solenoid valve configured to open and close a communication port selectively mountable at an upstream end of a distribution flow passage with a small number of nozzles. When the additional solenoid valve is mounted, a state of supplying a fuel gas to only a distribution flow passage with a large number of the nozzles by opening the solenoid v...